EEG data from six participants were excluded from the ERN analysis due to excessive artifact, and therefore the final sample consisted of 90 participants (control: n = 27; placebo: n = 31; alcohol: n = 32). Initial analyses indicated that the ERN emerged between 10 and 110 ms post-response and was largest over fronto-central and central scalp locations, consistent with previous research (Bartholow et al., 2012; Yeung et al., 2004). Analysis of this component was based on mean amplitudes measured 10–110 ms following the response at electrodes FC3, FCz, FC4, C3, Cz, and C4. Previous research has shown that ERN amplitude stabilizes when at least 6 error trials are included in each participant’s average waveform (Olvett & Hajcak, 2009). Due to a number of participants making fewer than 6 errors on compatible trials, analysis of the ERN was limited to incompatible trials only. Data from an additional four participants were excluded from the N2 and FSW analysis due to excessive artifact in the stimulus-locked data; therefore the final sample for these analyses consisted of 86 participants (control: n = 24;
